# Ruby

> TODO

Intro

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## Table of contents <!-- omit in toc -->

1. [TL;DR](#tldr)
1. [Further readings](#further-readings)
   1. [Sources](#sources)

## TL;DR

<details>
  <summary>Setup</summary>

```sh
apt install 'ruby'
brew install 'ruby'

SSL_CERT_FILE='path/to/ssl.cert'
```

</details>

<details>
  <summary>Usage</summary>

```sh
# Check file syntax.
# Does *not* run the code.
ruby -c '/etc/gitlab/gitlab.rb'

# Create ruby gems from code.
gem build

# Unpack gems into code.
gem unpack 'logstash-filter-custom-0.1.2.gem'
```

</details>

<!-- Uncomment if used
<details>
  <summary>Real world use cases</summary>

```sh
```

</details>
-->

## Further readings

- [Website]

### Sources

- [Documentation]

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  Reference
  ═╬═Time══
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<!-- In-article sections -->
<!-- Knowledge base -->
<!-- Files -->
<!-- Upstream -->
[documentation]: https://docs.ruby-lang.org/en/master/
[website]: https://www.ruby-lang.org/en/

<!-- Others -->